The article defines the historical value and presents the results of a detailed dendrological inventory of lime trees alley in Droblin, Leśna Podlaska commune. The alley is a part of the manor and park complex of the nineteenth century and it is a valuable object not only in historical, but also in natural terms. The manor house, around which grow inventoried trees, originally belonged to the Hińcza and Wężyk families and currently it serves as a private catering and hotel facility with a stable. The access alley after the restoration and complementary plantings is to be the main thoroughfare leading to the manor house.